现在完成时的句型用法及例句

1、现在完成时构成助动词have/has +过去分词He has worked.He has not (hasn't )worked .Has he worked ?Yes, he has./ No, he hasn't.例:肯定句 I have worked.否定句 I have not (haven't ) worked.疑问句 Have you worked ?回答 Yes, I have. / No , I haven't .二.功能及意义1.表示一个动作发生在过去，对现在仍有影响.但没有具体的过去时间修饰。常 由下歹0副词修饰： ever曾经，never从

2、不， already已经，yet还（未），（yet 只用在否定句和疑问句中），just刚刚，recently, lately近来，so far迄今为 止=until now, up to now, before 以前例：Have you ever been to the Great Wall?（尔曾经去过长城吗？I have never heard of such a man£从没有听说过那个人。We have just had lunch我们刚刚吃过午饭I have already returned your money® 已经才巴钱还给你了。I haven't

3、found my book yet.（否）我还没有找到笔记本Have you done your homework yet?（疑） 你做作业了吗？Have you heard from him recently ?你最近收到他的来信了吗？So far, no one has made any mistakes yet.今为止 还没有人彳U夸昔误I have never traveled by plane before我以前从来没有乘飞机旅行过2表示一个动作发生在过去，一直持续到现在刚刚结束或者仍在继续。常常与 下列时间状语连用：t for + 一段时间I have learned Englis

4、hfor 8 yearst since +过去的一个时间点I have learned English since 2001t since + 一段时间 + agoI have learned English since 8 years agot since +时态为一般过去时的时间状语从句I have learned English since I was 5 years oldt in the past/last + 时间段We have had two English exams in the past two month诳两个月来我们进行了 2 次 英语考试Great changes

5、have taken place in my hometown in the past ten yearffi 十年来我的 家乡发生了巨大的变化。延续性动词与短暂性动词的用法现在完成时中, 与一段时间连用时应注意句中的谓语动词须是延续性动词, 非延续性动词不可和一段时间连用。我离开这所学校已经八年了。误 ：I have left this school for eight years （为他借用我的词典已经两天了误： He has borrowed my dictionary for two days （ X）非延续动词与一段时间连用时，可做相应转化因此中例句正确形式分别为我离开这所学校已经八

6、年了。正 ：I have been away from this school for eight years（ J他借用我的词典已经两天了正： He has kept my dictionary for two days （5其它非延续性动词与时间段连用时的变形buythavefall asleep be asleep begin be onjoint be in 或 be a member of come/arrive be in marry t be marriedborrow t keep, leave be awaydie t be dead,return be backget up

7、 t be up,catch a cold have a cold在否定句中短暂性动词可与段时间连用I haven't gone to see him for several months 我已经好几个月没有去看他了）I haven't bought anything for two months四区分have been to砒点；表示去过某个地方（已经回来），常与ever, never几次, 等连用have gone to驰点：表示到地方去了（还没回来）have been讷勉点：表示到了某个地方（多久了），常与for +段时间连用比较：He has been to China

8、 twice曾经去过，现在不在中国）He has gone to China他到中国去了 .（他可能已在去中国的路上，或已到 中国，总之，现在不在这里）He has been in China for two years他到中国已经两年了）五 对完成时的提问用 how long.?不能用 when. ?六现在完成时常用句型1 It is the first/second time.that.结构中的从句部分，用现在完成时It is the first time that I have visited the city这是我第一次参观这座城市It is the third time that t

9、he boy has been late这是这个男生第三次迟到了2 This is the. that.结构，that从句要用现在完成时This is the best film that I 've （ever） seen这是我看过的最好的电影This is the first time that I've heard him sing这是我第一次听他唱歌3 It is / It has been + 时间段 + since .It has been/ It's 5 years since we last met.自从上一次我们相遇到现在已经是五年了It's / It has been 3 months since the man died! S人死去 3 个月 了4 一段时间+完成时结构+ since引导的时间状语从句Two years has passed since I came here.七 现在完成时和一般过去时的区别现在完成时表示过去发生的某一动作对现在造成的影响或结果，强调的是现在的情况，所以它不能和表示过去的时间状语连用， 如yesterday last night, thre